Duplex envelope



Nov.19,1935. H, LEVINE 2,021,795

DUPLEX ENVELOPE Filed Oct. 16, 1955 I J 7 I LE fiVENTOR ATTOR N E Patented Nov. 19, 1935 UNITED STATES PATENT OFFICE This invention relates to duplex mailing envelopes intended to contain mailing matter of diferent classes.

I"he invention will be fully and comprehensive- 1y understood from a consideration of the following detailed description when read in connection with the accompanying drawing which forms part of the application, with the understanding, however, that the improvement is capable of extended application and is not confined to the exact showing of the drawing nor to the precise construction described and, therefore, such changes and modifications may be made therein as do not affect the spirit of the invention nor exceed the scope thereof as expressed in the appended claim.

In the drawing:

Fig. 1 is a plan view of the envelope of my invention; and

Fig. 2 is a fragmentary enlarged sectional View of the same.

Referring to the drawing for a more detailed description thereof, the numeral 5 indicates a single envelope having a flap 5a. A partition sheet 85 is disposed within the envelope 5 and is secured to the inner side of one face of said envelope thereby forming with the same pockets I and 8. A flap 6a extends from the partition sheet 8 and is adapted to be turned over onto one face of the envelope and to be covered by the flap 5a of the envelope 5. The flap 6a is preferably gummed so that it may be secured to the envelope and seal the pocket 8, while the flap 5a preferably has a string 9 attached thereto by means of discs IE! and l l which are held to the flap by means of an eyelet rivet I2. The string 9 is adapted to be Wound around a disc l5 which is secured to the envelope by means of an eyelet 5 rivet Hi, the latter passing thru one face of the envelope and thru the partition sheet 6, it being understood that when the string is so wound, the flap closure 5a closes the pocket I. The latter pocket is preferably used for third or fourth 10 class mailing matter, while the pocket 8 is used for first class mailing matter.

What is claimed is: c

A duplex envelope comprising an envelope including a closing flap extending from one wall thereof, a partition sheet substantially narrower than the length of said envelope and disposed Within the same and. forming a pair of pockets therewith and including a gummed closing flap,

a single means securing said partition sheet, adjacent its lower edge and substantially midway of its ends, to one of the walls of the envelope, the closing flap of the partition sheet being folded over into contact with the exterior face of that wall of the envelope to which the partition sheet is secured and the flap of the envelope being folded over into contact with the flap of the partition sheet, a fastening element held by said securing means and a string secured to and extending from the envelope flap and attached to said fastening element.

HARRY LEVINE. 

